NAME
MooseX::CurriedDelegation - Curry your delegations with methods
VERSION
version 0.001
SYNOPSIS
use Moose;
use MooseX::CurriedDelegation;
has one => (is => 'ro', isa => 'Str', default => 'default');
has foo => (
is => 'rw',
isa => 'TestClass::Delagatee', # has method curried()
default => sub { TestClass::Delagatee->new },
handles => {
# method-curry
# Note the hashref, not arrayref, we employ
# first arg is the remote method to delegate to
# second is an arrayref comprising:
# coderef to call as a method on the instance, followed by
# "static" curry args
#
# so, essentially:
# $self->foo->remote_method($self->$coderef(), @remaining_args);
#
# foo_del_one => {
# remote_method => [ sub { ... }, qw{ static args } ],
# },
foo_del_one => { curried => [ sub { shift->one }, qw{ more curry args } ] },
# curry_to_self() always returns: sub { shift }
foo_del_two => { other_method => [ curry_to_self ] },
},
);
DESCRIPTION
Method delegation is awfully handy -- but sometimes it'd be awfully
handier if it was a touch more dynamic. This is an attribute trait that
provides for a curried, delegated method to be provided anyna
USAGE
Using this package will cause the relevant attribute trait to be applied
without requiring further intervention. We use the standard
handles => { local_method => delegate_info, ... }
delegation methodology, however our currying is invoked when
delegate_info is a hashref. We expect delegate info to look like:
{ remote_method => [ $coderef, @more_curry_args ] }
Only $coderef is ever executed by the delegation. This means that it is
safe to have any number of additional coderefs in @more_curry_args: they
will be passed through to remote_method without additional manipulation.
ADDITIONAL SUGAR
In addition, we export a number of helper functions.
curry_to_self()
This function always returns a coderef like "sub { shift }". That is,
this:
local => { remote => [ curry_to_self ] }
is equivalent to:
local => { remote => [ sub { shift } ] }
TRAIT ALIASES
CurriedDelegation
Resolves out to the full name of our attribute trait; you can use it as:
has foo => (traits => [CurriedDelegation], ...)
SEE ALSO
Please see those modules/websites for more information related to this
module.
* Moose
* Moose::Meta::Method::Delegation
SOURCE
The development version is on github at
and may be cloned
from
BUGS
Please report any bugs or feature requests on the bugtracker website
https://github.com/RsrchBoy/moosex-currieddelegation/issues
When submitting a bug or request, please include a test-file or a patch
to an existing test-file that illustrates the bug or desired feature.
AUTHOR
Chris Weyl
COPYRIGHT AND LICENSE
This software is Copyright (c) 2012 by Chris Weyl.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999